I'm genuinely curious. The Yamaha is new old stock from around 1999. If it was never used, what kinds of things would you expect that age would do to the electronics? I have bought new old stock electronics before that were 20-30 years old (mainly TVs) and never had an issue with them. Only on initial startup was there some wonkiness with the TVs but once they ran for a few minutes they were fine (I'm guessing the capacitors simply had to reform). I'm not discounting what you're saying. I would just like to know more specifics.